package cn.tedu.csmall.business.controller;

import cn.tedu.csmall.business.service.IBusinessService;
import cn.tedu.csmall.commons.exception.CoolSharkServiceException;
import cn.tedu.csmall.commons.restful.JsonResult;
import cn.tedu.csmall.commons.restful.ResponseCode;
import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/base/business")
@Api(tags = "业务触发模块")
public class BusinessController {

    @Autowired
    private IBusinessService businessService;

    // localhost:20000/base/business/buy(因为代码特定的请求方式是Post,所以不能使用浏览器输入地址栏的方式测试，必须用knife4j)
    @PostMapping("/buy")
    @ApiOperation("执行业务的触发")
    @SentinelResource(value = "执行业务的触发",blockHandler = "blockError",fallback = "fallbackError")
    public JsonResult buy(){
        // 调用业务逻辑层方法
        businessService.buy();
        if (Math.random()<0.5){
            throw new CoolSharkServiceException(ResponseCode.INTERNAL_SERVER_ERROR,
                    "随机异常");
        }
        return JsonResult.ok("购买完成");
    }

    public JsonResult blockError(BlockException e){
        return JsonResult.failed(ResponseCode.INTERNAL_SERVER_ERROR,"服务器忙");
    }

    public JsonResult fallbackError(Throwable throwable){
        return JsonResult.failed(ResponseCode.INTERNAL_SERVER_ERROR,"服务降级");
    }

}
